South Korea is investigating the online leak of partial blueprints and operating manuals for some of its nuclear reactors, as the perpetrator threatens to continue publishing data unless three facilities are shut by Christmas.

British singer Joe Cocker, whose had hits that included "You Are So Beautiful" and "Up Where We Belong," and a contortionist style of performance memorably parodied by John Belushi on "Saturday Night Live," has died. He was 70.